摘要
以西安地铁2号线6、号线通过钟楼工程为背景,针对铺设浮置板轨道和采取隔离桩两种减振措施,分6种工况分析了地铁2号线及6号线运营对钟楼结构的振动影响,预测了减振隔振措施的效果,并分别对不同工况进行三维动力有限元数值模拟.结果表明:不采取减振措施时,地铁振动会对钟楼造成影响;采用浮置板轨道对地表振动有明显改善;采用隔离桩对减少地表振动效果并不明显.
Based on the existing circumstances that Xi＇ an subway Line 2 and Line 6 were designed via the Bell Tower, and through considering the two vibration reduction measures： floating slab tracks and isolation piles, six different conditions are analyzed by 3D dynamic FEM numerical simulation. With a view to the influence of the Bell Tower＇ s structure caused by the operation of subway Line 2 ＆-6, the effect of vibration reduction and isolation is predicted. The conclusions indicate that, without taking vibration reduction measures, the Bell Tower will be affected by the train-induced vibration. And then, floating slab tracks can reduce the ground vibration. In addition, isolation piles don＇t have an obvious effect on the ground vibration reduction.
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2010年第4期88-92,共5页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家自然科学基金资助项目(50848046)
北京交通大学优秀博士生创新研究基金资助项目(141069522)
关键词
地铁振动
古建筑
动力有限元
减振措施
metro vibration
heritage building
dynamic FEM
vibration reduction measure
